Help running this command on adb?

I saw a post on reddit about sanitizing an android device but I was wondering how I could execute the command? I managed to root my device but I'm at a loss as to how to execute it. Through adb? But it doesn't seem to be a valid command.

Help is much appreciated.

The script is:

Code:

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cd /data; for i in 0 1 2 3 4 5 6 7 8 9; do cat /dev/urandom > $i; rm $i; done

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